Authorities in southern California were in a standoff Wednesday with a man who was reportedly firing a high-powered rifle from an apartment window in the vicinity of the San Diego airport, prompting the Federal Aviation Administration to bar incoming flights from landing.

Police and fire personnel near the scene of the active shooter in San Diego.Reuters

The San Diego Union-Tribune reported that police have flooded the area in Bankers Hill and are working to isolate the gunman. No injuries were reported, but a nearby elementary school has been placed on lockdown.

FAA spokesman Ian Gregor says the complex is under the airport’s approach path. He said departures are being allowed.